He understands the meaning of the proverb 'Teaching is half learning', which means that teaching leads to one's own learning.

The godan conjugation verbs are the basic verb forms in Japanese.

In Japanese grammar, 'n-row irregular conjugation' is a very important concept.

Understanding the four-step conjugation in Japanese is difficult.

When learning Japanese grammar, it is important to understand verbs in the lower monograde conjugation.

When learning Japanese grammar, it is important to understand the verbs of the second conjugation.

When learning Japanese grammar, understanding the tri-grade conjugation is important.

The characteristic of annelids is that their bodies are divided into ring-shaped segments.

This butterfly valve is used to control the flow of fluid.

He explained in detail about the structure of the sphenoid bone.